Spontaneous electromagnetic fluctuations in unmagnetized plasmas I: General theory and nonrelativistic limit
Spontaneous electromagnetic fluctuations in unmagnetized plasmas I: General theory and nonrelativistic limit
复制标题
未磁化等离子体中的自发电磁波动 I：一般理论和非相对论极限
DOI：
10.1063/1.3682985
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发表时间：
2012
影响因子：
2.2
通讯作者：
P. Yoon
中科院分区：
文献类型：
--
作者：
R. Schlickeiser;P. Yoon
利用Klimontovich和麦克斯韦方程组，导出了非关联等离子体粒子电磁涨落谱（电场、磁场、电荷和电流密度）的一般表达式，这些表达式在狭义相对论中是协变正确的。一般表达式适用于等离子体粒子分布函数的任意动量依赖性以及集体和非集体波动。在这一系列的第一篇论文中，结果说明了非相对论性各向同性麦克斯韦粒子分布函数的重要特殊情况下，特别是提供弱放大模式和非周期模式的热波动。
Using the system of the Klimontovich and Maxwell equations, general expressions for the electromagnetic fluctuation spectra (electric and magnetic field, charge and current densities) from uncorrelated plasma particles are derived, which are covariantly correct within the theory of special relativity. The general expressions hold for arbitrary momentum dependences of the plasma particle distribution functions and for collective and non-collective fluctuations. In this first paper of a series, the results are illustrated for the important special case of nonrelativistic isotropic Maxwellian particle distribution functions providing in particular the thermal fluctuations of weakly amplified modes and aperiodic modes.